Packing case or carton sealing machine.



H. L. JOHNSON.

PACKING CASEYOR IART ON'SEALING MACHINE.

APPLICATION FILED FEB. 23. 191B- I0 SHEETSSHEET I.

a A I U) TTE'I- I- WITNESSES A TTORNE YS.

Patented Apr. 17, 1917.

H. L. JOHNSON.

PACKING CASE 0R CARTON SEALINGMACHINE.

APPLICATION FILED FEB. 23. I916- Pa-tented Apr. 17, 19 17.

10 SHEETS-SHEET 2- IN VEN TOR. I HARRY L. domvso/v W 0 as N I g kWITNESSES WITNESSES H. L. JOHNSON.

PACKING CASE 0R CARTON SEALING MACHINE. APPLICATION FILED FEB.28. 191s.

Patented Apr. 17, 1917.

I0 SHEETS-SHEET 4- IN VEN TOR. HARRY L. Jo/r/vso/v H. L. JOHNSON.

U aw 51H 'll; I II N 8H" k) 'INVENTOR.

ITNES s,- V M HARRY L Jomvsa/v W v BY )"fl Q 4i ATTORNEYS.

H. L. JOHNSON. PACKING CASE OR CARTON SEALING MACHINE- APPLICATION FILEDFEB.28. 1916. 1,223,176. Patented Apr. 17, 1917. 10 SHEETS-SHEET e.

WITNESSES: I

A TTORNE YS.

H. L. JOHNSON.

PACK|NG CASE 0R CARTON SEALING MACHINE.

APPLICATION FILED FEB. 28,1916- 1,223,176. Patented Apr. 17,1917.

I0 SHEETS-SHEET T.

11v VEN TOR. fgfir L. Momma v M k A TTOR NE YS.

mu M WITNESSES.-

OCM W H.L.IOHNSON. I PACKING CASE 0R CARTON SEALING MACHINE.

APPLICATION FILED FEB. 28' 1916- I Patented Apr. 17, 1917.

I0 SHEETS-SHEET 8.

IIIEI I I II N I I3 E; I an |I.

E II ION) '2 I :I I I'r-------------- a I: I

i INVENTO WITNESSES:

H/IRR) L JOHNSON g ATTORNE vs.

H. L. JOHNSON. PACKING CASE OR CARTON SEALING MACHINE.-

APPLICATION FILED FEB. 28 1916- Patented Apia 17, 1917" I0 SHEETS-SHEET9.

INVENTOR.

WW 0 m m w. L A m M N Y B m E m vW H. L. JOHNSON. PACKING CASE 0R CARTONSEALING MACHINE.

APPLICATION FILED FEB. 23 I9;-

Patented Apr. 17, 1917.

I 0 SHEETS-SHEET l0.

'INVENTOR. HHHR Y L. Johwso/v ATTORNEYS Y L. JOHNSON, OF BATTLE CREEK,MICHIGAN, ASSIGNOR TO JOHNSON SEALER 00., LTD., 01 BATTLE CREEK,MICHIGAN.

PACKING CASE OR CARTON SEALING MACHINE.

Specification of Letters Patent. 7'

Application filed February 28, 1916. Serial No. 80,921.

,To all whomit may concern.-

Be it known that I, HARRY L. JOHNSON, a

citizen of the United States residing at Battle Creek, county ofCalhoun, State of Michigan, have invented certain new and usefulaspecification.

and sealing other kinds of This invention relates to improvements inpacking case or carton seahng machines.

My improvements are particularly designed by me for embodiment inmachines for closing and sealing filled packing case or cartons, such asare commonly formed of packing board or corrugated paper board or thelike, although certain features are readily adapted and desirable for.use in closing cartons. he main objects of this invention are:

. First, to provide an improved packing adapted for the clos' g andsealing of filled packing cases or cartons.

Y Second, to provide ina packing case or carton sealing machine animproved glue applying mechanism.

Third, to provide in a packing case or :carton sealing machine animproved flap closing and sealing mechanism.

Fourth, to provide a structure of the class described which is of largecapacity and at the same time quite compact and simple in structure.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification. The invention is clearlydefined and pointed out in the claims- A structure which is a preferredembodiment of my invention is clearly illustrated in the accompanyingdrawing, forming a part of this specification, in which:

Figure I is a detail side view of a packing case or carton sealingmachine embodying the features of my invention. l

Fig. II is aplan view of the structure shown in Fig. I.

Fig. III is a detail longitudinal vertical section on a linecorresponding to line 33 of Fig. II.

Fig. IV is a detail plan view of portions of the driving connections forthe conveyer in section.

AUTOMATIC Patented Apr. 1?, 191a.

and gluing' mechanism, parts being shown.

Fig. V is a detail plan view,' partially in section, showing detailsofthe gluing mechamsm.

Fig. VI is a detail view, partially in verticalsection, on a linecorresponding-to line 6-601 Fig. I, showing 'detalls of the gluingmechanism for the bottom or lower flaps.

Fig. VII is an enlarged detail plan view of the drivingconnections forthe gluing mechanism. I

Fig.'VIII is an enlarged detail vertical section on a line correspondingto line 88 of Fig. VI, showing further details of the gluing mechanism.case or carton closing and sealing machlne Fig. IX 1s a detall verticalsection on a .line corresponding toline 99 of Fig. VI,

showing further details of the glue distributmg roller operatingmechanism.

Fig. X is an enlarged detail longitudinal section showing details oftheflap closing responding to line 1313 of Fig. XI.

Fig. XIV is a fragmentary detail View of the carton feed mechanisrr Fig.XV is an enlarged detail view showing the front end of the auxiliary orsupplementary conveyer and one of the flightsthereof.

XVI is an enlarged detail section on' a hne corresponding to line 16-16of Fig. XV.

Fig.XVII-is an enlarged detail view of the rear end of the auxiliary orsupplementary conveyor and one of its flights.

I Fig. XVIII is an enlarged detail section on a line corresponding tothe broken line 18-18 of Fig. XVII Fig. XIX is a detail plan view of aportion of the sealingmechanism and its driving connections.

Fig. XX is 'a detail vertical section on a line corresponding to line20-2O of Fig. X, showing further details of the sealing mechanism.

Fig. XXI is a detail horizontal section on a line corresponding to line21-21 of Fig. I, showing further details of the sealing and deliverymechanism.

Fig. XXII is a detail sectional view on a line corresponding to line2222 of Fig.

VIII, showing further details of the gluingmeehan sm. Y

Fig. XXIII is a perspective view of the packing case or carton with itsside or top and bottom flaps extended and the. glue applied thereto.

Fig. XXIV is a perspective view of one of the packing cases or cartonswith the flaps in their closed and sealed position.

. In the drawing, similar reference characters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the little arrows at the ends of the section lines.I

Referring to the drawing the frame of my improved machine is preferablyformed of side members 1,1,connected by suitable cross pieces 2 toprovide a rigid support for the operating parts. The frame is preferablyprovided with legs 3. The mechanism is largely arranged and supportedWithin this frame and is driven from the power shaft. 4 having a pulley5 thereon. 1

The driving or counter shaft 6 is connected to the power shaft 4 bymeans of the pinions 7 and 8, respectively. The driving shaft has aclutch 9 controlled by the leverlO. The conveyer and other driven partsare a driven through this driving shaft 6 and the driving connectionsfor the several parts will be described in connection with thedescription of such parts.

The packing case or carton 11, such as the machine illustrated isespecially designed for handling (see Figs. XXIII and XXIV) has theusual end flaps 12 and-side flap 13. The terms end and side flapsareused in a relative sense, as the case may be any desired proportion,and in this description I use the terms top and bottom flaps only todesignate their relation as the box is conveyed through and operatedupon by the machine, these terms being used as a matter of convenience.1

The machine illustrated is especially designed for the sealing ofpacking cases or cartons packed or filled with a number of articles,such as canned or packaged goods.

The cases or cartons are fed to the conby the conveyer chain 22.

- magma veyer of the machine by able means with the flaps position shownin Fig. X veyer mechanism comprises the main conveyer belt 14 carried bythe pulleys 15 and 16 on the shafts 17 and 18 arranged at the front andrear ends, respectively, of the frame of the machine.

Guides 19 are provided at thefront end of the conveyer to assist inguiding the packages thereto. A side bar 20 is mounted upon the frameabove and at each side of the conveyer belt 14.

The upper reach of the belt 14 is supported by a series of rollers 21.It will be 12 folded to the understood that these packing cases withtheir contents are frequently of considerable weight and these rollersare provided to support the conveyer belt and prevent its sagging underthe load of the cartons. To insure the carrying of the cases through thegluing mechanism in synchronism with its operation I provide anauxiliary or propelling conveyer consisting of the sprocket chain 22carried by the sprocket wheels 23 and 24, mounted on the shafts 25 and26, respectively. These shafts are arranged so that the auxiliaryconveyer is supported within and in the vertical plane of the mainconveyer'belt 14 and so that the flights 30 travel along on their upperreach at the side of the main belt. The driving connections for the mainconveyer shafts 17 and 18 are through the auxiliary conveyer (see Fig.IV). I

The shaft 26 is provided with a sprocket which is connected by thesprocket chain 27 to a sprocket on the driving shaft. The auxiliaryconveyer shafts 25 and 26 are connected The shaft 17 is connected to theshaft 25 by the sprocket chain 28 and suitable sprockets on the shaft,

18 by the sprocket chain 29 and suitable sprockets on the shaft (seeFig. IV). The

conveyer chain 22 is provided with flights 30 arranged in spaced pairsto swing up and travel at the sides of the conveyer belt 14 when theyare on the upper reaches of the chain 22. The reaches of the sprocketchain 22 are supported between the sprockets 23 and 24 by ways 31 and32, the way 31 being grooved at 33 to receive the chain (see Fig.XVIII). The way 31 is provided with tracks 34 for the flights which areprovided with rollers 35 which travel on these tracks, thus supportingthe sition (see Figs. XVIII.) I

The front ends of the tracks 34 are positioned and shaped to engage therollers 35 as the flights travel over the sprocket 23 and swing them toupright position with a quick movement engaging the cartons with aslight XV, XVI, XVII and hand or other suit- XIII. The conflights in anupright posquares them on the conveyer belt.

The driving connections, are such that the auxiliary conveyer travelsslightly faster than the main belt 14, so that 'while the I flights areengaged with the cartons their speed exceeds slightly that of theconveyer belt 14, thereby insuring their being positively carried alongby the flights and timing their movement with that of the gluingmechanism, as will be hereafter described.

' The tracks 34 areadjustably mounted at their rear ends so that thevertical position of the flights as they travel along in cartonengagingposition may be determined (see Figs. XVII and XVIII). This adjustmentis effected by the set screws 34' carried by the cross pin 34. Thetracks are held in their adjusted positions by the screws 36. The rearends of the tracks 34 are spaced from the rear sprockets 2.4 so that therollers 35 pass from the tracks, allowing the flights to drop rearwardlyaway from the cartons as they are engaged by the delivery mechamsmtracks 34 to receive the flights as the rollers drop from the tracks(see Fig. XVII). As the flights are carried over the rear sprocket wheel24 they are engaged by the guide 37 which swings them to. forwardlyfacing position so that they are carried forward on the under reach ofthe sprocket chain 22 in such forwardly facing position and with theirrollers 35 traveling on the flange-like tracks 38 ofthe bottom way 32.The. forward ends of these tracks 38 are curved upwardly at 39 so thatthe flights are swung out as they are carried over the front sprocket 23(see Fig. XV). As the rollers leave the tracks 38 they are engaged bythe guides 40. on the front ends of the tracks 34 and guided onto thetracks 34, the flights being swung abruptly to position to engage thecartons, the engaging movement serving, as stated, to

straighten them should they be twisted or out of square. I

With the parts thus arranged, the cartons are positively fed through themachine and m a manner that prevents their becoming clogged or wedgedand so that they are positively and a properly carried through thegluing and. sealing mechanism and in synchronism with that mechanism.

To insure the delivery of the cartons in time to be engaged by theflights 30 as they swing over the front sprocket 23 I provide anautomatic feed mechanism consisting of the-stops 41 mounted on the rockshaft 42" carried by the bracket 43 on one of the cross pieces of theframe (see Figs. I and XIV).

- The stop members 41 are held in their operative position by-the catch44 adapted to coact with the pin 45 on one of the stop members. Thiscatch 44 is carriedby'the rock shaft 46 having an arm 47 thereonconnected by the link 48 to the rocker arm 49. This rocker .arm 49 isactuated by the cam 50 mounted on the cam wheel 51'which also operatesother parts, as will appear as the description proceeds. The stops 41are re-v turned-to their locked position by means of the coiled spring41-. Y

The cam 50 ismounted on the shaft 52 connected by the sprocket chain 53and through the clutch 9 to the driving shaft 6 (see Figs. IV and XIV).y

As stated, the packages to be sealed are delivered to the machine withthe flaps 12 folded. As the packages are carried along upon their sidesby'the conveyer the top and bottom or lower flaps 13 are engaged by theflap extenders 54 and 55' which guide the flaps to the gluing-mechanism(see Fig. III). 6

I will-first describe the means ing glue to the lower flaps. a pair offeed rollers 56 for apply-- This comprises rollers 57 which are carriedby stub sha 58. The shafts 58 are supported for vertical movement by theswinging arms 59 havingbearings 60 at their outer or swinging ends forthe shaft. The feed rollers 56"rotate in the glue receptacles or trough61. When in their lowered position the distributing rollers 57 engage ortravel on the feed rollers-so glue is-applied to the distributing thatthe rollers which in turn apply it tothe lower flaps 13. The shafts 58are connected to the transmission shafts 62 by the sprocket chain 63 andsuitable sprockets. The shafts 62 are connected to the shafts 64 by thepinions 65.

The shafts 64 constitute the pivots for the when, folded, do not extendcompletely across the package. In order to control the application ofthe glue tothe flaps the roll ers 57 are raised and lowered by means ofthe cam wheels 51 which have cams 68 having higher ortions 69 thereonwith which the rollers 0 on the shafts 58 coact (see Figs. VI, VIII, IX,XIV).

The circumference of the distributing rollers is one-half that oftheglue applying rollers and the cams 68 occupy one-half thecircumference of the cam wheels 51 so that mounted on the .shaft 52below the distributin Buffers 36 are mounted at the sidesof the.

movement of the glue disglue, indicated at 67 is not. applied thedistributing rollers ride or travel on the glue rollers'to receive thegluetherefrom and are then raised out of engagement with the gluerollers to apply the glue to the flaps, as shown in Fig. VIII, and whenthe high parts 69 of the cams are reached the distributing rollers arelifted free of the flaps so that the glue is applied as-shown in Fig.XXIII (see Figs. IV, V, VI, VIII and IX).

To support the flaps while they are acted upon by the glue rollers Iprovide spaced supports 71 and 72. The spaces between these supportsallow the contacting of the distributing rollers with the feed rollers.

In order to efiectively present the full surfaces of the flaps to theglue rollers the supports 71, which are carried by the brackets 7 3, areprovided with central ribs 74 curved in cross section and positioned toengage the flaps centrally (see Figs. VIII and XXII). The tendency ofthese ribs is to bow up the flaps at their centers and when they passunder the distributing rollers they hug or contact closely therewith,insuring an even distribution of the glue thereon.

The glue is applied to the top flaps by the distributing rollers 75which are mounted on the shafts 76. These shafts 76 are connected to theconveyer shaft 26 by the chain 77 and suitable sprockets (see Fig. V).The rollers 75 rotate in the glue troughs or receptacles 78. Scrapers 79are provided for the glue rollers 75. In order to apply the glue to theflaps at suitable spaced intervals flap holders 80 are provided forraising and lowering the flaps. These holders have slits 81 (see Figs.III, XI and XIII) into which the flaps are guided by the top flap guidesor spreaders 55. The flap holders 80 are pivotally mounted at 82 androcked or oscillated to raise and lower the flaps, engaging anddisengaging them This raising and lowering is efiected by means of therock shaft 83 having arms 85 thereon connected to the flap holders bythe links 86. The rock shaft 83 is provided with an arm 87 which coactswith the cam 88 on one of the shafts 76.

Thus arranged, the movement of the flap supports is properly timed withthe movements of the conveyer. After the cartons leave the glue applyingrollers the flaps 13 are engaged by the flap closers 89 and turned orfolded against the flaps 12 and are delivered or pass to the flappressing and discharging mechanism.

This flap pressing and discharging mechanism-comprises a pair of belts90 disposed at the sides of the rear end of the conveyer belt 14. Thefront ends of these flap pressing and delivery belts 90 are supported bythe vertically disposed pulleys 91, the pulleys for the outer ends ofthese belts not being illustrated. The pulleys 91 are mounted on thevertical shafts 92 connected by the sprocket chains 93 and suitablesprockets to from the rollers.

the .vertical shafts 94 which are provided with beveled gears 95 meshingwith the bevel gears 96 on the shaft 26 (seeFig. IV). The inner reachesof these'pressing and delivery belts are supported by a series ofrollers 97 carried by the bars 98.

To insure the bringing of the side flaps 13 edge to edge as they aredelivered to the pressingrollers I provide a pair of rollers 99 mountedon a shaft 100 so as to engage the upper corners of the carton, itslower corners being supported byslide ways 101 (see Figs. XIX and Theseedging or truing rollers 99 press downwardly and bring the edgesof theflaps 13 together.

The shaft 100 of the truing rollers is carried by a pair of arms 102pivotally mounted on the shaft 103. The shaft 100 is-connected to theshaft 103 through the sprocket chain 104 and suitable sprockets on theshafts. The shaft 103 is driven from the shaft 76 of one of the top gluerollers and the sprocket chain 105 which connects it to a suitable gear106 on a stub shaft 107. The gear 106 meshes with a gear 108 on theshaft 103. I

The pressure of the truing rollers is regulated by means of the screws109 carried by arms 110 (see Figs. X and XIX).

With the parts thus arranged, the cartons or packing cases are fed intothe machine either by hand or by machinery, as desired, and with the endflaps folded, as shown in Fig. XXIII. The remaining operations areentirely automatic, the cases being released by the feed stops 41 sothat they are properly engaged by the flights and. carried forwardthrough the glue applyingmechanism and beyond that their flaps arefolded and sealed and trued up and delivered between the flap pressingand delivery belts from which they are discharged at any convenientpoint. i

My improved sealing machine is particularly well adapted for thehandling of packing cases or cartons filled with canned or packagedgoods and is of large capacity, the work being performed in a verycomplete and satisfactory manner. I have illustrated and described myimprovements in an embodiment which has in use proved very practical. Ihave not attempted to illustrate or describe various modifications instructural details which I contemplate and which might be desirable forparticular embodiments or where the machine is designed for the handlingof a particular or special style of package or carton, as I believe thedisclosure made will enable those skilled in the art to which myinvention relates to embody or adapt the same as may be desired. Idesire, however, to be understood as claiming my improvementsspecifically in the form illustrated as within the scope of the ap- Iclaim as-new and desire to secure by Letters Patent, is:

1. In a structure of the class described, the combination of a conveyeradapted to carry cartons on their sides and comprising side bars adaptedto retain the front and rear,

flaps in their closed positions, a glue applying means comprising a gluefeed roller shaft disposed transversely below said con-.

veyer, a pair of feed rollers on said shaft, a pair of distributingrollers mounted at the sides of said conveyer to coact with said feedrollers, swinging supports for said distributing rollers comprisingshafts therefor, shafts on which said supports are pivotally mounted,driving connections for such pivot shafts to said distributing rollersshafts,

cams on said feed roller shaft, and rollers on said distributing rollershaftscoacting with said cams, whereby said distributing rollers areraised and lowered to bring them into engagement with said feed rollersand to move them to and from flap engaging position.

2. In a structure of the class described, the combination of a conveyeradapted to carry cartons on their sides and comprising side bars adaptedto retain the front and rear flaps in their closed position, a glueapplying means comprising a pair of glue feed rollers, a pair ofdistributing rollers adjustably mounted at the sides of said conveyer tocoact with said feed rollers, and means for driving said rollers andvfor raising and lowering said distributing rollers to engagingposition.

bring them into engagement with said feed rollers" and to move them toand from flap 3. In a structure of the class described, the combinationof a conveyer, a glue applying means comprising a glue feed roller shaftdisposed transversely of said conveyer, a pair of feed rollers on saidshaft, a pair of distributing rollers mounted at the sides of saidconveyer to coact with said feed rollers, swinging supports for saiddistributing rollers comprising shafts therefor, shafts on which saidsupports are pivotally mounted, driving connections for such pivotshafts to said distributing roller shafts, cams on said feed rollershaft, rollers on said distributing roller shafts'coacting with saidcams, whereby said distributing rollers are raised and lowered to bringthem into engagement with combination of a conveyer, a glue applyingmeans comprising a glue feed roller shaft disposed transversely of saidconveyer, a 6

pairof feed rollers on said shaft, apair-of distributing rollers mountedat the sides of said conveyer to coact with said feed rollers,

swinging supports for said distributing rollers comprising shaftstherefor, shafts on which said, supports are pivotally mounted, drivingconnections for such pivot shafts to said distributing roller shafts,camson said feed roller shaft, rollers on said distributing rollershafts coacting with said cams, whereby'said distributing rollers areraised and lowered. I

5. In a structure of the class described, the

combination of a conveyer, a glue applying means comprising a glue feedroller shaft disposed transversely of said conveyer, a pair of feedrollers-on said shaft, a pair of distributing rollers mounted at thesides of said conveyer to coact with said feed rollers, swingingsupports for said distributing rolls ers, cams on said feed rollershaft, rollers on said distributing roller shafts coacting with saidcams, are raised and lowered to bring them into engagement with saidfeed rollers and to move them to and. from flap engaging position, anddriving connections for said glue applying mechanism to said conveyer.

6. In a structure of the class described, the

combination of a conveyer, a glue applying means comprising a glue feedroller shaft disposed transversely of said conveyer, a pair of feedrollers on said shaft, a pair of distributing rollers mounted at thesides of said conveyer to coact with said feed rollers, swingingsupports for said distributing rollers, cams on said feed roller shaft,distributing rollers on said distributing roller shafts coacting withsaid cams, whereby said i. distributing rollers are raised and lowered.

move them to and from flap engaging position, and driving connections.for said glue applying mechanism to said conveyer.

whereby said distributing rollers 8. In a structure of the classdescribed, the

combination of a conveyer, a glue applying means comprising a glue feedroller shaft, a feed roller on said shaft, a distributing roller mountedto icoact with said feed roller, a swinging support for saiddistributing roller comprising a shaft therefor, a shaft on which saidsupport is pivotally mounted, driving connections for such pivot shaftto said distributing roller shaft, a cam on said feed roller shaft, aroller on said distrib uting roller shaft coacting with said cam,

- whereby said. distributing roller is raised.

and lowered to bring it intoengagement with said feed roller and to move1t to and from flap engaging position, and driving connections for saidglue applying mechanism to said conveyer.

9. In a structure of the class described, the combination of a conveyer,a glue applying means comprising a glue feed roller shaft, a feed rolleron said shaft, a distributing roller mounted to coact with said feedroller, a swinging support for said distributing roller comprising ashaft therefor, a shaft on which said support is pivotally mounted,driving connections for such pivot shaft to said dis- -trib1iting rollershaft, a cam on said feed roller shaft, a roller on said distributingroller shaft coacting with said cam, whereby, said distributing rolleris raised and lowered. 1

10. In a structure of the class described, the combination of aconveyer, a glue applying means comprising a glue feed roller, adistributing roller mounted for lateral movement, means for raising'a'ndlowering I said distributing roller to bring it into and outofengagement with said feed roller, means for guiding a flap between saidrollers, and means for raising and lowering said roller to and from flapengaging position whereby the glue is applied to the flaps at spacedintervals.

11. In a structure of the class described, the combination of aconveyer, a glue applying means comprising a glue feed roller, adistributing roller mounted for lateral movement, means for actuatingsaid distributing roller tobring it into engagement with said feedroller and to move it to and from flap engaging position, means forguiding a flap between said rollers, and driving connections for saidglue applying mechanism to said conveyer.

12. In a structure of the class described, the combination of aconveyer, a glue applying means comprising a glue. feed roller,

a distributing roller mounted for lateral movement, means for guiding aflap between said rollers, and means for actuating said distributingroller to bring it into engagement with said feed roller and to flapengaging position.

13. In a structure of the class described, the combinationof a conveyeradapted to carry cartons on their sides and comprising side bars adaptedto retain the front and rear flaps in their closed position, a lowerflap glue applying means, an upper flap glue applying means comprising apair of glue distributing rollers disposed at the sides of said conveyerand so that the upper flaps veyer.

are carried above the same, flap supports pivoted at their forward endsand with. their rear ends adjacent said upper flap distributing rollers,said supports having slits therein adapted to receive the upper flaps,shafts forsaid rollers, arock shaft, arms on said-rock shaft, linksconnecting said arms to said supports whereby they are raised andlowered to raise and lower the flaps, a cam on one of said upperdistributing rollershafts, an arm on said rock shaft coacting with saidcam, guides for swinging the upper and lower flaps to a horizontalposition and. guidingthem to thesaid gluing mechanism, and drivingconnections for said glue applying mechanisms to said con- 14. In astructure of the class described, the combination of a conveyer, a glueapplying means comprising a'pair of glue distributing rollers flapsupports pivoted at their, forward ends and with their rear endsadjacent said distributing rollers, said supports having slits thereinadapted to receive the upper flaps, shafts for said rollers, a rockshaft, arms on said rock shaft, links connecting said arms to saidsupports whereby they are raised and lowered to raise and lower theflaps, a cam on one of said roller shafts, an arm on said rock shaftcoacting with said cam, and driving connections for said glue applyingmechanism to said conveyer.

15. In a structure of the class described, the combination of aconveyer, a glue ap-.

plying means comprising a glue distributing roller, a flap supportpivoted at its forward said distributing roller, said support havlng aslit therein adapted to receive the flap, means for actuating said flapsupport to bring the flap into engagement with said distributing roller,and driving connections for said flap support to said conveyer.

16. In a structure of the class described, the combination of aconveyer, a glue applying means comp-rising a glue distributing roller,a flap support disposed at the side of the conveyer and provided with aslit into which flaps are successively carried by the conveyer, andmeans for actuating said-flap support 'to bring the flap into engagementwith said distributing roller synchronized with said conveyer.

In witness whereof, I have hereunto set HARRY L. JOHNSON. [L.s.]

Witnesses:

F. W. WILDENBERG, J. B. CHAMBERS.

end and with its rear'end' adjacent

